1. A universal reduction procedure for Hamiltonian group actions;Arms,1991
2. Particle motions in a magnetic field;Braun;J. Differential Equations,1970
3. Structural stability and the Størmer problem;Braun;Indiana Univ. Math. J.,1970
4. Methods of Celestial Mechanics;Brouwer,1961
5. Ideals, Varieties and Algorithms: An Introduction to Computational Algebraic Geometry and Commutative Algebra;Cox,1992